Communication method and apparatus

Abstract

A communication method and an apparatus are provided. The method includes: A communication apparatus may send uplink capability information to a network device, where the uplink capability information includes at least one of the following: a maximum quantity of uplink carriers configured for the communication apparatus, a maximum quantity of uplink carriers supported by the communication apparatus, and a maximum quantity of channels supported by the communication apparatus. Further, the communication apparatus receives first information from the network device, where the first information indicates an uplink carrier used for uplink transmission, and performs uplink transmission with the network device on the uplink carrier. The communication apparatus may be a terminal device.

What is claimed is: 
     
       1. A communication method, wherein the method comprises:
 sending uplink capability information of an communication apparatus to a network device, wherein the uplink capability information comprises: a maximum quantity of uplink carriers configured for the communication apparatus, and a maximum quantity of uplink carriers supported by the communication apparatus; 
 receiving first information from the network device in response to sending the uplink capability information, wherein the first information indicates N uplink carriers to be used for uplink transmission of the communication apparatus, and the N uplink carriers belong to M uplink carriers configured for the communication apparatus; and 
 performing the uplink transmission with the network device on the N uplink carriers; 
 wherein M is an integer greater than 1, N is an integer greater than or equal to 1, and N≤M; and 
 wherein M is less than or equal to the maximum quantity of uplink carriers configured for the communication apparatus, and N is less than or equal to the maximum quantity of uplink carriers supported by the communication apparatus. 
 
     
     
       2. The method according to  claim 1 , wherein the uplink capability information further comprises a maximum quantity of channels supported by the communication apparatus, and the method further comprises:
 receiving second information from the network device, wherein the second information indicates Q channels, and the Q channels correspond to the N uplink carriers; and 
 wherein performing the uplink transmission with the network device on the N uplink carriers comprises: performing the uplink transmission with the network device on the Q channels corresponding to the N uplink carriers, wherein 
 Q is less than or equal to the maximum quantity of channels supported by the communication apparatus. 
 
     
     
       3. The method according to  claim 1 , wherein the method further comprises:
 receiving third information from the network device, wherein the third information configures, for the communication apparatus, the M uplink carriers and at least one channel corresponding to each of the M uplink carriers, wherein 
 a sum of quantities of channels corresponding to each of the M uplink carriers is less than or equal to a maximum quantity of channels supported by the communication apparatus. 
 
     
     
       4. The method according to  claim 1 , wherein a first uplink carrier of the N uplink carriers to be used for the uplink transmission is located in a frequency range covered by a first frequency band combination, and the first frequency band combination comprises at least one frequency band. 
     
     
       5. The method according to  claim 4 , wherein the method further comprises:
 sending fourth information to the network device, wherein the fourth information indicates at least one frequency band combination supported by the communication apparatus, and the at least one frequency band combination comprises the first frequency band combination. 
 
     
     
       6. A communication method, wherein the method comprises:
 receiving uplink capability information from a terminal device, wherein the uplink capability information comprises: a maximum quantity of uplink carriers configured for the terminal device and a maximum quantity of uplink carriers supported by the terminal device; 
 sending first information to the terminal device in response to receiving the uplink capability information, wherein the first information indicates N uplink carriers to be used for uplink transmission of the terminal device, and the N uplink carriers belong to M uplink carriers configured for the terminal device; and 
 performing the uplink transmission with the terminal device on the N uplink carriers; and 
 wherein M is an integer greater than 1, N is an integer greater than or equal to 1, N≤M, M is less than or equal to the maximum quantity of uplink carriers configured for the terminal device, and N is less than or equal to the maximum quantity of uplink carriers supported by the terminal device. 
 
     
     
       7. The method according to  claim 6 , wherein the uplink capability information further comprises a maximum quantity of channels supported by the terminal device, and the method further comprises:
 sending second information to the terminal device, wherein the second information indicates Q channels, and the Q channels correspond to the N uplink carriers; and 
 wherein performing the uplink transmission with the terminal device on the N uplink carriers comprises: performing the uplink transmission with the terminal device on the Q channels corresponding to the N uplink carriers, wherein 
 Q is less than or equal to the maximum quantity of channels supported by the terminal device. 
 
     
     
       8. The method according to  claim 6 , wherein the method further comprises:
 sending third information to the terminal device, wherein the third information configures, for the terminal device, the M uplink carriers and at least one channel corresponding to each of the M uplink carriers, wherein 
 a sum of quantities of channels corresponding to each of the M uplink carriers is less than or equal to a maximum quantity of channels supported by the terminal device. 
 
     
     
       9. A communication apparatus comprising:
 a transmitter configured to send uplink capability information of the communication apparatus to a network device, wherein the uplink capability information comprises: a maximum quantity of uplink carriers configured for the communication apparatus, and a maximum quantity of uplink carriers supported by the communication apparatus; 
 a receiver configured to receive first information from the network device in response to sending the uplink capability information, wherein the first information indicates N uplink carriers to be used for uplink transmission of the communication apparatus, and the N uplink carriers belong to M uplink carriers configured for the communication apparatus; and 
 the transmitter further configured to perform the uplink transmission with the network device on the N uplink carriers; and 
 wherein M is an integer greater than 1, N is an integer greater than or equal to 1, N≤ M, M is less than or equal to the maximum quantity of uplink carriers configured for the communication apparatus, and N is less than or equal to the maximum quantity of uplink carriers supported by the communication apparatus. 
 
     
     
       10. The communication apparatus according to  claim 9 , wherein the uplink capability information further comprises a maximum quantity of channels supported by the communication apparatus, and the receiver is further configured to receive second information from the network device, wherein the second information indicates Q channels, and the Q channels correspond to the N uplink carriers; and
 wherein performing the uplink transmission with the network device on the N uplink carriers comprises: performing the uplink transmission with the network device on the Q channels corresponding to the N uplink carriers, wherein 
 Q is less than or equal to a maximum quantity of channels supported by the communication apparatus. 
 
     
     
       11. The communication apparatus according to  claim 9 , wherein the receiver is further configured to receive third information from the network device, wherein the third information configures, for the communication apparatus, the M uplink carriers and at least one channel corresponding to each of the M uplink carriers, wherein
 a sum of quantities of channels corresponding to each of the M uplink carriers is less than or equal to a maximum quantity of channels supported by the communication apparatus. 
 
     
     
       12. The communication apparatus according to  claim 9 , wherein
 a first uplink carrier of the N uplink carriers to be used for the uplink transmission is located in a frequency range covered by a first frequency band combination, and the first frequency band combination comprises at least one frequency band. 
 
     
     
       13. The communication apparatus according to  claim 12 , wherein the transmitter is further configured to send fourth information to the network device, wherein the fourth information indicates at least one frequency band combination supported by the communication apparatus, and the at least one frequency band combination comprises the first frequency band combination. 
     
     
       14. A communication apparatus comprising:
 a receiver configured to receive uplink capability information from a terminal device, wherein the uplink capability information comprises: a maximum quantity of uplink carriers configured for the terminal device, and a maximum quantity of uplink carriers supported by the terminal device; 
 a transmitter configured to send first information to the terminal device in response to receipt of the uplink capability information, wherein the first information indicates N uplink carriers to be used for uplink transmission of the terminal device, and the N uplink carriers belong to M uplink carriers configured for the terminal device; and 
 the receiver is further configured to perform the uplink transmission with the terminal device on the uplink carrier; and 
 wherein M is an integer greater than 1, N is an integer greater than or equal to 1, N≤M, and M is less than or equal to the maximum quantity of uplink carriers configured for the terminal device, and N is less than or equal to the maximum quantity of uplink carriers supported by the terminal device. 
 
     
     
       15. The communication apparatus according to  claim 14 , wherein the uplink capability information further comprises a maximum quantity of channels supported by the terminal device, and the transmitter is further configured to send second information to the terminal device, wherein the second information indicates Q channels, and the Q channels correspond to the N uplink carriers; and
 wherein performing the uplink transmission with the terminal device on the N uplink carriers comprises: performing the uplink transmission with the terminal device on the Q channels corresponding to the N uplink carriers, wherein 
 Q is less than or equal to the maximum quantity of channels supported by the terminal device. 
 
     
     
       16. The communication apparatus according to  claim 14 , wherein the transmitter is further configured to send third information to the terminal device, wherein the third information configures, for the terminal device, the M uplink carriers and at least one channel corresponding to each of the M uplink carriers, wherein
 a sum of quantities of channels corresponding to each of the M uplink carriers is less than or equal to a maximum quantity of channels supported by the terminal device.